Hi, I have a PC running Windows XP which I've had since Feb 2004 and which has been beset with problems ever since I got it. I've recently solved a major CPU overheating problem which was causing the processor to overheat every time the computer was turned on, causing it to crash to a blue screen of death. I solved this by cleaning out the CPU's heatsink and replacing the thermal grease between the processor and the heatsink.
Now, however, there seems to be another problem. In fact, it appeared when I was reinstalling Windows after a complete hard drive reformat right after I had finished putting the PC back together after replacing the thermal grease. Basically, the computer is rebooting itself at completely random intervals. There is one thing about these reboots that strikes me - Windows is not reporting any errors (no blue screens even with reboot-on-error turned off, nothing appearing in the system logs, no "report to Microsoft" prompts, no "your system did not shut down correctly" messages... nothing. It's as if somebody is sitting there pressing the reset button at random intervals. The beep and the flashing of the keyboard lights is exactly the same as when you press the reset button. These reboots are happening frequently enough that the computer is essentially unusable.
I have tried the following already, to no avail:
- Unplugging the reset button from the system
- Removing both of my CD/DVD drives and my sound card
- Unplugging all the peripherals except the keyboard and monitor
- Completely de-dusting the inside of the system
Another bizarre observation is that system does not seem to reboot randomly outside of Windows (i.e. before Windows loads up, like in BIOS). It DOES however reboot randomly during the installation of Windows itself, but not during the reformatting of the hard drive (which takes place outside of Windows).
The rebooting doesn't appear to happen in safe mode, but for some reason the CPU fan does start spinning at very high speeds and the CPU starts heating up even though the PC is not apparently doing anything. The rebooting DOES, however, happen in safe mode with networking enabled...
Please note that I really don't have any money to spend on this unless I have VERY good reason to believe that what I spend it on will fix the problem, and I don't have spares of anything lying around to swap out components with. I have already replaced the PSU about two years ago. I have also replaced my RAM within the last two years, and I have run memtest86 and found no problems. The only other internal hardware that has changed since I first got the PC is a DVD-RW drive which I installed after replacing the thermal grease. Note also that I have previously performed another reformat/reinstall without any problems at all.
The problem has suddenly become worse today since I've plugged back in more components and started installing some drivers - the computer now hangs for about a minute before the memory check at startup, and again for about two minutes before the Windows login appears.
That's all I can think of for now, let me know if more information is needed. I apologise if I have posted this in the wrong forum.
Now, however, there seems to be another problem. In fact, it appeared when I was reinstalling Windows after a complete hard drive reformat right after I had finished putting the PC back together after replacing the thermal grease. Basically, the computer is rebooting itself at completely random intervals. There is one thing about these reboots that strikes me - Windows is not reporting any errors (no blue screens even with reboot-on-error turned off, nothing appearing in the system logs, no "report to Microsoft" prompts, no "your system did not shut down correctly" messages... nothing. It's as if somebody is sitting there pressing the reset button at random intervals. The beep and the flashing of the keyboard lights is exactly the same as when you press the reset button. These reboots are happening frequently enough that the computer is essentially unusable.
I have tried the following already, to no avail:
- Unplugging the reset button from the system
- Removing both of my CD/DVD drives and my sound card
- Unplugging all the peripherals except the keyboard and monitor
- Completely de-dusting the inside of the system
Another bizarre observation is that system does not seem to reboot randomly outside of Windows (i.e. before Windows loads up, like in BIOS). It DOES however reboot randomly during the installation of Windows itself, but not during the reformatting of the hard drive (which takes place outside of Windows).
The rebooting doesn't appear to happen in safe mode, but for some reason the CPU fan does start spinning at very high speeds and the CPU starts heating up even though the PC is not apparently doing anything. The rebooting DOES, however, happen in safe mode with networking enabled...
Please note that I really don't have any money to spend on this unless I have VERY good reason to believe that what I spend it on will fix the problem, and I don't have spares of anything lying around to swap out components with. I have already replaced the PSU about two years ago. I have also replaced my RAM within the last two years, and I have run memtest86 and found no problems. The only other internal hardware that has changed since I first got the PC is a DVD-RW drive which I installed after replacing the thermal grease. Note also that I have previously performed another reformat/reinstall without any problems at all.
The problem has suddenly become worse today since I've plugged back in more components and started installing some drivers - the computer now hangs for about a minute before the memory check at startup, and again for about two minutes before the Windows login appears.
That's all I can think of for now, let me know if more information is needed. I apologise if I have posted this in the wrong forum.