PC freezing issues

First off, wishing everyone a wonderful holiday season!

I have an old desktop that I recently took to a repair shop to get formatted. I didn't ask for anything fancy, just a clean install of Windows XP. Now, I'm dealing with constant freezing. I work seasonally at a summer camp, and since the kids (mostly older high schoolers) were home alone while I was away, they somehow managed to mess up the computer so badly that Windows wouldn't even boot. Since I only had old installation discs, I sent it in for service. Here are the specs:
processor - Intel Athlon 64 2800
motherboard - NF8/NF8v Nvidia nForce 3 250Gb
RAM - 1.5 GB
graphics - Amd RadeonHD 3450 521mb
BIOS - Phoenix Award BIOS
HDD - 250 GB SATA
OS - Windows XP 5.1.2006, Service Pack 3
I don't want to sink too much money into this machine, but I’d love to keep it running for some retro gaming like Medal of Honor: Allied Assault. The issue is that it freezes randomly—sometimes just while I'm reading news on CNN or chatting on an online forum. In Medal of Honor: Allied Assault, it rarely freezes, maybe once during an entire night of online play, though some days it happens more often, including while playing the game.😢...For instance, in Ski Racing and B-2 Spirit, it freezes right when a map or track is loading. I'm looking for some guidance on what might be causing this and roughly how much it would cost to replace a faulty part. I am planning on buying a new PC soon, but as I mentioned, I want to keep this one around for older titles like Medal of Honor: Allied Assault, B-2 Spirit, F.E.A.R., Need for Speed: Most Wanted, Far Cry, and Halo. The processor has never been overclocked.

Thanks in advance!

Freezing can sometimes be a software issue, but it could just as easily be hardware-related. I’d suggest downloading a temperature monitoring app to see how things hold up under a heavy load. Besides, when was the last time you actually replaced the thermal paste? It might also be worth testing the drive itself—maybe run HDD Tune Pro trial—and using something like HWMonitor to keep an eye on those temps. I once dealt with a system freezing because an old-school admin didn't apply the thermal paste correctly to the CPU; they basically just

David Sanders4 said:Freezing can be caused by software issues, but hardware is just as likely. I'd suggest downloading a temperature monitoring app to see how things look under load. Also, when was the last time you replaced the thermal paste? It could also be a drive issue, so running something like HDD Tune Pro might help, along with HWMonitor for temps. I once had an older machine freeze up constantly because the thermal paste on the CPU wasn't applied properly at all.

Thanks for the reply.
That sounds like a good plan, and honestly, simpler than running a dozen different tests. However, I'm a bit confused because it sometimes freezes right after a morning boot-up. It sits overnight, cools down completely, then I turn it on, sit down to read the news, open a page, try to scroll, and—bam—it freezes. 😠
Could you explain exactly what steps I should take? I've swapped out the sound card, the GPU, the RAM, and the network card, but I haven't touched the CPU or even opened up the case to check the fans. Please let me know specifically what I need to do and how. 🤷

A CPU isn't quite like a car engine. It can spike in temperature relatively quickly and lose efficiency, but that’s a separate issue entirely. Your trouble might not even be rooted in the processor itself; it could easily be a power supply issue. That said, if you haven't swapped out the thermal paste in years, you should definitely do that regardless. You might want to apply the same logic to your graphics card too. There are plenty of tutorials on YouTube showing you how to remove a heatsink and reapply paste. Honestly, it's pretty straightforward.