Hey all, I found a PC on the street, a Lenovo Thinkcentre. It had the mobo, the PSU, and the CPU which was a Pentium (something) dual core. Anyway, I threw in some ram and a 1tb SATA drive, it runs really good... However, it freezes from time to time, mostly when doing something. I could watch full movies on it or play games with no problem, but it seems to freeze up when i'm doing something like doing heavy browsing or something involving the browser which is weird. I can't pinpoint the problem really, it seems more hardware specific than software to be honest. The event viewer has no errors whatsoever.
What do you all think the problem can be? There is one main thing which could be the problem, but I need advice before I go and buy a new one. Sometimes, the PC doesn't turn on. I believe it to be the PSU, but I could be wrong. I have to turn it on and off a few times if I don't use it constantly. Also, when I changed the voltage on the PSU, the fan spins really fast on the CPU or really quietly. I feel as if the CPU was overheating, but I doubt it because I used CPUID to check the temperature, and it was quite fine.
Also, I one in a blue get a ram error, the ram should be fine, ran memtest with no errors many times on my main PC, but I can't use all 4 sticks otherwise it'll beep. I know this is all quite vague, but if anyone could possibly help me out, I'd appreciate it.
I'll sum up everything if you don't want to read everything:
*PC freezes from time to time, mostly when browsing web pages
*Sometimes doesn't turn on and the fan spins fast at first, then goes really low
*Can only use 3 sticks of ram, 4 will make the mobo beep.
Thanks in advance.