[shed]

Hi, can anyone help please. Not sure which room to go to. My PC monitor keeps going off saying no signal so I guess there is something wrong with the PC itself. If I reboot it comes back on and is fine for a while usually or sometimes it goes off within a couple of minutes of rebooting. I have tried changing the monitor but the same thing happens. I took graphics card out and put it into different machine and it works fine there. It is about 5 years old and is a 2.8 gig and it's a pentium 4. I have cleaned it out and it looks ok. Anyone got any ideas what it could be thanks.

[mrdaveyk]

when you say cleaned how far did you go? have you cleaned out ALL fans thoroughly

sounds like a typical over heating

[shed]

Hi, thanks for the reply. I took off the cover and hoovered what I could and lightly brushed some and hoovered at the same time so that the dust was cleaned out. I think I got to most of the stuff on the fans. The fan on the motherboard was quite dusty so that was taken out of the PC and put back on. I noticed that the paste seemed dry but I haven't put new on it as it seemed to go back on quite tightly. Do you think I should put some new paste on.

[mrdaveyk]

just for the record never hoover. it creates a static charge on the dust which can easily fry your computer use compressed air or a small painting brush

however for the paste, im not too sure ive never built a computer and have never have to remove a fan as i keep mine pretty clean (try to)

my personal opinion would be to reapply some paste if you feel the seal has broken, but like i say ive never had to do it. try to maximize airflow as much as you can, tidying cables away and any other things that may reduce airflow, then give it a whirl and see how long see lasts

[Carbon]

Uh, you shouldn't take off the heatsink without reapplying new thermal paste. Clean it off with isopropyl and get some Arctic Silver for a couple bucks.

[rok]

i think u get 2 rs:or your mnt broken down or your graphic card have broblem
U may change other card or monitor to check it deeply

[link590o]

i don't think it's a problem with the computer itself. it may be simply that your monitor is dying. it sounds like you've had the monitor for as long as you've had the computer. which says to me that the monitor might be on its last legs. try plugging that monitor into another computer. if you get the same result, your course of action is obvious.