Question:
How can we stop our CPU overclocking?
joanne6855
2007-08-14 10:32:17 UTC
We have had a problem for a while with our computer re-booting itself, particularly when it is scanning for viruses, but also when it is running games or other demanding processes. We have tried to cool our PC down by opening up and cleaning inside the processor unit, as well as relocating it to a cooler location where it can get more air. We have also tried to free up some memory by deleting files. We are convinced that the re-booting problem is down to the CPU overclocking, as we have been monitoring its usage. But what more can we do? Should the things we have already done make a difference?
Twelve answers:
Redchaos
2007-08-14 10:36:22 UTC
A CPU cannot overclock UNLESS you set it up to overclock in the BIOS. It just doesn't happen on its own.



Secondly you seem to be having a problem with overheating either the sensors are damaged or the heatsinks or fans are. You have to bring it in to be looked at.
zeven77
2007-08-14 10:37:18 UTC
overclocking is a set-up made by the user itself to make the computer run faster than its manufactured default setting. it can't be done automatically and without your prior knowledge.



for your problem, it looks like you need to invest on adding more ram as your system is having a hard time doing strenuous jobs. if you are quite certain that temperature's your problem, you can check your system temp in the bios after a sudden boot and see if it enabled system restarting during critical temps.
!nv!s!ble
2007-08-14 10:40:54 UTC
You really should not use technical terms if you don't know what they mean.



Make sure you have good airflow through your case. Leaving it open will likely make it worse.



Deleting files from your hard-drive should not make a difference.
kaye
2016-05-18 01:11:49 UTC
Right where you are im suprised you havent over heated it yet.
2014-08-15 21:49:45 UTC
The best way is to download Ccleaner here http://bitly.com/UrALrK



Or you can go on Windows operating system locate the command prompt and go there to do the following:

Create a Recovery file of system and date it today.



Then begin by;

delete the 'Temp' folders..they have hidden subfolders so you need to set the attributes in order to bypass this. For each subfolder delete all cookies and rubbish left behnd after install-uninstalled programs. Do a 'dir' command to check your progress. Make sure the 'Temp' file is empty.



goto c:\windows\prefetch and delete everything in there..no exceptions



goto c:\windows folder and delete all the '$' files that have been installed by updates. They can all be succesfully deleted and just take up disk space.



Locate the Internet Temporary Files..Check to see how high the saving level is..some have it set at 30 days..but that stores faaaar tooo much data..though it slows down the system overal. Keep this to a minimum..suggest 2 or 5 at most.



Delete all 'cookies' all those you don't need.



Locate the windows directory and go through the folders you know and those you don't need. Check this once a week at least. Some programs will install under XP as NT and older systems where there is no check of systems weight.



Check to see that system files have not changed since last booting. Things like .ini files or .bat are important items.





Check for 'Hidden Directories' all over the disk...do this at the command prompt:



dir *.* /ah wil show these hidden directories



Check the 'dir' command for all parameters
brianthesnail123
2007-08-14 13:22:05 UTC
as previously mentioned joanne,a processor cannot be overclocked unless you do it yourself,it wont overclock itself

i belive your problem is down to a hardware or power fault,what you first need to tell me is "when your p.c reboots itself ,is the fans and power supply still active",as this would indicate a graphic card problem!

this is a problem i have come across a few times,when the p.c does a demanding task such as a virus scan or burning a disk,the card seems to shut off,this can be due to a faulty card(missing pipelines,faulty core)or the power supply thats powering the card(if the card uses a power source)

you should try changing your graphic card for a different one and try it for a few days,see if this helps,run a few virus scans and burn a few disks,see if the problem occurs

also if you power supply is less than 350watt then try upgrading to a 500watt model

a quick fix solution to stop the re-boots is to go to control panel>system properties>advanced>start up and recovery>uncheck the box that says "automatically restart",this should stop any reboots,as this box when ticked will restart(or reboot) the p.c when a system failure or crash occurs,by unticking the box you stop the restarts

however the reason for the initial problem still needs to be found,do a full m.o.t on your p.c,open the case and using a "air duster"(compressed air in a can) blast all the dust and grease from all fans,especially the c.p.u fan and heatsink and blow any dist from the motherboard,also check all ide cables,leads and wires for proper connection and condition,if in disrepair replace them,if needed download the motherboard manual from the web,its handy to have a motherboard diagram for guidance when checking leads and cables are correctly fitted

final thought! my diagnosis,i think the problem is something to do with inadequate cooling to your c.p.u,the symptoms of this are exactly the same as what you have described,it may be that your processor has just reached the end of its working life

i hope this helps

good luck mate!
?
2007-08-14 10:38:19 UTC
Try going into the bios setup by pressing at startup .. I think you will find an option there to do the disable overclocking...

Maybe it's a virus infection though ... try using another hard disk .. and see if the problem shows
2007-08-14 10:37:27 UTC
as above u ave to set it up to overclock
2007-08-14 10:37:00 UTC
go to bios setup and restore all settings to default save and restart
M G
2007-08-14 10:35:34 UTC
Check the BIOS settings. Also, take it to the place you bought it from, they may have defrauded you by overclocking the cpu, and charging for a higher speed processor.
526F686974
2007-08-14 10:38:15 UTC
Overclocking is nothing but increasing processor voltages to increase speed by messing with the voltage jumpers on the motherboard. since your CPU is overheating, i suggest that you get another fan (cooler) for your CPU although keeping the cabinet open helps sometimes.
Clark Kent
2007-08-15 09:28:15 UTC
Hey guys, if your computer is a bit slow on start up i suggest trying to stop the programs that start on start-up, they will cause you to take more time to load all the programs, and less time for you to get dfone what you want to get done.



1)you must go to start



2) go to RUN (usually on the right hand side under conrol panel for the xp users)



3) in the box that appears type Msconfig



4) a box will apear with many programs on their checked, uncheck the one you DONT want running on start-up, and check the ones you do



5) make sure all the programs you have unchecked will keep your computer safe, if you are unsure of that then best bet is to leave it checked and not mess your computer.....





A Beginner's Guide to Overclocking

This guide has been created from an AMD point of view, but Intel'ers can use this as well.



Warning: Overclocking isn't always safe. There are safety measures built in to your computer to prevent damage while overclocking, but the safety of your hardware isn't guaranteed (even if you are following the guide).



The main pieces in your computer that are affected by overclocking are your CPU, your memory, and your motherboard (but you won't have to worry about your motherboard if you're just beginning to overclock). When you overclock your CPU, you also end up overclocking your Memory, HT link (if you have one), sometimes your AGP/PCI-e and PCI cards, and a few other things. Why? Because of a magical thing called "FSB".



What is FSB?

FSB, as far as overclocking is concerned, is simply a number. Your computer's FSB is the data links between your CPU, Memory, Chipset, and other components. Lots of things in your computer use the FSB to tell it how fast to run. FSB is usually rated in MHz.



How does my CPU use FSB?

Your CPU takes the FSB and multiplies it by the CPU Multiplier to get your CPU speed.

In math? FSB (in MHz) times Multiplier equals CPU speed (in MHz)



How does my Memory use FSB?

Your memory takes that FSB speed, multiplies it by two (DDR=Double Data Rate), and it gives you your DDR rating.

Sometimes, the processor wants to set the FSB at a high value, but the memory wants to set the FSB at a low value. The motherboard will set a "Divider" that will lower the Memory's FSB so that the Memory can run at the lower speed it wants without affecting the CPU. The Memory Divider is also known as the Memory Ratio.

In math? FSB divided by the memory ratio times two equals DDR Rating.



Why is PC133 so much slower than PC2100. Don't they run at the same FSB?

Yes, they run at the same FSB, but PC133 isn't DDR (and it's older technology).



Wait.. Didn't you say something about a CPU Multiplier? Can't I change that?

Yes. You can change your CPU multiplier, too. Some processors, such as AMD's Sempron, won't let you increase this, though. If you want to overclock your computer, but don't want to change the FSB, you can change the CPU Multiplier. The advantage of changing this rather than your FSB is that the CPU Multiplier only affects the CPU. FSB, like I said before, affects more than your CPU.



Lets make it even more complicated!

Remember FSB? FSB is (and now "was") the link between your CPU, Memory, Chpiset, AGP/PCI-e, and other computer components. As computers started to run faster and faster, a lot of motherboards started getting bottlenecked at these points, so we now have AMD's HyperTransport Technology and Intel's QuadPumped Technology to fix it. Although AMD was the company to bring HyperTransport to fame, AMD, Apple, nVidia, Cisco Systems, Sun Microsystems, and a few other companies all helped develop HyperTransport (HT). HyperTransport links were designed to replace the FSB system. This means that the links between your CPU, Memory, Chpiset, AGP/PCI-e, and other computer components are now three to five times faster than the original FSB system was.

Although HyperTransport was designed to replace the FSB, it hasn't eliminated it. Socket 754's use 4x FSB and Sck939 use 5x FSB. Making your HT Link run faster doesn't make your computer faster, it just gives it the potential to be faster. Making this run too fast will crash your computer.

(Intel plans to release a competitor to HyperTransport that they're calling the Common System Interface (or "CSI"). This is expected in 2008.)

In math? FSB times the HT Multiplier equals the HT Link Speed (or sometimes called "Rated FSB").



Wait! I still don't understand HyperTransport/QuadPumped! And why doesn't it make my computer faster?

The CPU, Memory, Video Card, chipset, and everything else in your comptuer all need to be able to talk to eachother, right? Think of the data paths that link all those things together as highways. If you try to fit too many cars down the highway, you get a traffic jam and some cars have to wait before they can get through. HyperTransport puts more lanes in the highway so more cars can flow through it. If you have two lanes, but only one car is going down the highway, adding a third lane won't make that car go faster. If you have a few thousand cars, but only two lanes, adding a third lane would make the flow move faster.



What about Intel! Don't they have, like, 1GHz FSB?

Those 800MHz FSB Prescott P4's actually run at 200MHz FSB. Intel also had the same problem with the FSB not being fast enough to support the system. Intel's Pentium 4 line of processors (for example) has their FSB "QuadPumped", which offers the same advantage as HyperThreading. I believe that this is the same story with the "1GHz FSB" Intel processors. If you look at CPU-Z, you should have both FSB and "Rated FSB". For overclocking purposes, we'll only be concerned about the original FSB.

Also, there are rumors that Intel's QuadPumped Technology does not increase the link speed between multiple processors whereas AMD's HyperTransport does. Given Intel's plan to move to a mainstream Quad Core, a HyperTransport competitor by Intel (aka: Intel's CSI Bus) suddenly makes sense.



I'm a visual learner. Can you show me a picture?

Lets use one that I randomly pulled off of Google's image search.





The image (that may show up) above represents a Quad Processor AMD Opteron computer (Intel is similar. There is a 6.4GB/s link between each processor and a 6.4GB/s link between the processors and the AMD-8131 Northbridge chipset. The Northbridge connects to the PCI Express bus, SCSI controller, and on-board Ethernet cards. The Northbridge is also connected to the AMD- 8111 Southbridge chipset via a slower 800 MB/s link. The Southbridge connects to slower on-board devices like the on-board audio, USB 2.0, EIDE, etc. This was FSB's job until today's devices became too fast for it. System devices would end up competing for bandwidth. And what shows up like a knight in shining armor? HyperThreading and QuadPumped Technology.



Lets do some math!! Can we have an example?

When stock, my computer runs at 200 FSB. The CPU has a 10x Multiplier. The memory is PC3200 and isn't divided (We call this a 1:1 ratio, or a 1/1 divider). The HyperTransport link runs at a 4x Multiplier. Now that we know all that...



Lets find the CPU speed.

200MHz FSB times 10 (CPU Multiplier) = 2,000 MHz CPU speed, or 2GHz CPU speed.



Lets find the Memory speed.

200MHz divided by 1 times 1 (remember the divider?) times two (Double Data Rate) = DDR400. We can also take that DDR400 and multiply by 8 bytes to give us 3200, or PC3200.



Lets find the HT speed.

200MHz times 4 (the HT Multiplier) = 800MHz HT Link.



Put all that together, and you can see that I have a 2GHz CPU, DDR400 memory, and an 800MHz HT link.



So what happens when you raise the FSB?

Lets say I take my computer and run it at 210 FSB. Lets do the example again.



CPU:

210 FSB times 10 (Multiplier) = 2,100MHz, or 2.1GHz. (See the increase?)



Memory:

210 FSB divided by 1 times 1 (1:1 ratio) times two (DDR) = DDR420, or about PC3400



HT:

210 FSB times 4 (HT Multiplier) = 840MHz HT Link



At stock speeds, we had:

200FSB, 2.0GHz, DDR400, and 800MHz HT.

Overclocked, we have:

210FSB, 2.1GHz, DDR420, and 840MHz HT



What if you just raise the CPU Multiplier?

Lets say I raise it to 11.

CPU:

200 FSB times 11 = 2,100MHz, or 2.1GHz.

Memory:

200 FSB divided by 1 times 1 times two = DDR400 or PC3200

HT:

200 FSB times 4 = 800MHz HT Link



200 FSB, 2.1GHz, DDR400 and 800MHz HT

Notice how everything is at it's original speed except the CPU.



Memory dividers are really confusing. Why would I ever want to make my memory run slower? Could you give me an example?

Sure! Lets say your memory runs at 200 FSB, but can only run at a maximum of 210 FSB before it crashes. We can set a Memory Divider of 5/6 to drop it down from 200 FSB to 166 FSB. Now we can raise your FSB higher without stressing out your memory as much.



200 FSB divided by 6 times 5 times two = DDR333



240 FSB divided by 6 times 5 = DDR400 (Back to where we started, but the FSB is a lot higher and the memory is still in a safe range.)



How do I know when to stop?

When your computer will not boot in to Windows (or if it does, will freeze after a few minutes of gaming), you'll know that you have pushed something too far. If you've overclocked to the point where your computer unstable, you can boot into the BIOS and set your FSB back down. If you overclock too far your computer may not boot at all. If your computer does not do anything when you turn it on, you'll need to reset the BIOS. You can do this by unplugging your power cable and removing the silver button battery on your motherboard. Leave it out for at least 5 seconds (15 seconds recommended) and then put it back in. Plug in the power cable and boot. You'll need to go into your BIOS and load the default settings.

An alternative to changing the FSB in the BIOS is to change the FSB with a program such as ClockGen. When your computer crashes, the actual BIOS value doesn't change, so you reset to stock speeds every time you reboot. Once you've found an overclock that works for you, you can try setting it in the BIOS.



Another thing that could stop your computer from running (and could potentially damage your computer) is heat. Overclocking means more power. More power means heat. If your CPU, Memory, or motherboard chipset(s) become too hot, they will stop working properly. Overclocking is not recommended on stock CPU coolers. While overclocking, always watch your temperatures! If something becomes too hot, do anything you can to cool it down before you try overclocking again. Most things can be easily cooled by simply adding a fan to blow over it.



I can't raise my FSB anymore! Is this really as fast as my computer will ever go?

The exciting answer is "No"! Just because your computer has hit it's limit doesn't mean that everything in your computer has hit it's limit, but rather that one thing in your computer has hit it's limit. If you can figure out what thing that is, you can usually make that one thing run a little slower. For example, if your memory is what's crashing but your CPU can run faster (this is common), you can use the Memory Divider to lower it. With the memory running a notch slower than usual, you can increase your overclock even more.



You'll need to learn a lot more about overclocking if you want to go to the extremes that you see in "The Extreme OC Clubhouse".



How can I check what my computer is running at now?

Try using CPU-Z. CPU-Z will let you look at all the fun little numbers that make your computer tick without running the risk of accidentally changing something.



Okay! I'm confident that I know what I'm doing. Where do I change my FSB?

Your FSB (and everything else to do with overclocking) is located in your BIOS. Be careful, though. There are a lot of settings in here that shouldn't be played with. Different motherboards will have the FSB in different places. If you can't find your FSB, it may be disabled from the BIOS. You can try asking people in the forums, but each BIOS is unique to their manufacturer. If all else fails, try using ClockGen. ClockGen runs inside Windows and can support a good range of motherboards.


This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.
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