Huge computer hardware issue.

[Mousieguy]

This is probably the wrong section, I don't have time and I really need help with this.

A while ago, (about a year or two) my computer started playing up on me. This is where the horror begins.
My computer has been constantly destroying itself every month.
Every month I go and replace the parts and it costs me alot of goddamn cash.

The first symptom is laggy sounds on the computer or (Random lag spikes) that cause audio to distort slower than usual and halt the computer for a second.

After that, the resolution shrinks to a very small size. You cannot change it back and it's annoying to deal with.
I know as this progresses that windows starts making alot of "Errors".

After about three days of this, and me getting to ignore it. The computer boots up, but fails to turn on the monitor. It idly boots and refuses to give me display.

To help you out, I've made a checklist of things that caused problems.

-Laggy pc sound - Motherboard (When I replaced it. It sounded better for a little bit.)
- Resolution shrinking and monitor not working - Graphics card. (It fixes the problem when I replace it. Costly though)

I'd like to know whether this is a power issue, A humidity or heat issue. Quite a few techs can't figure it out and I could really use the help.

[liljim]

you named off 2 suspects already that i would also accuse. Heat and/or power. Could you give me some details on the hardware were dealing with? Vid card, mobo, power supply?

[Mousieguy]

Now, I have changed parts frequently because I thought it mattered which parts I used. This thing kills anything.

Vid card : Inno3d GTS 450
Mobo : GA-78MLT-S2P
Thermaltake 470W power supply.
(I've replaced the power supply twice with no change ):

[liljim]

So after replacing parts, it runs fine for about a month then starts all over again?

Do you have any software to monitor your temps when this starts happening?

Depending on what peripherals you use, that psu could be a little small but thermaltake has always been reliable and efficient for me. When you replaced it, did you use different brands/sizes or all the same type?

[Mousieguy]

No, It's generally different parts, I used the same motherboard three times.
Something really odd happened the other night though. After a power surge, the afternoon when I turned on my computer, It was all back to normal...