I have noticed that my MCH Vcc reading could dip below the minimum on occasion but was uncertain if it mattered. It may be that a different power supply could help but I don't know if any raise it much above 1.1. Other components such as monitor can contribute to problems but a new name-brand PS would be a good start.
Zakaria Habib wrote:
I had to do somthing, I removed the CMOS battery and connected again. It worked very nicely for 2 hours. But, again it hanged and didn't started untill i removed the power cord.
So if removing the motherboard coin cell/battery then reinserting it gets things going again nicely for a while, it may be worth renewing that before you try anything else - they're cheap enough to buy and at 3 yrs of age it may be on the way out. Normally a flat motherboard battery will be accompanied by errors such as loosing the date and time and various settings but the proof of the pudding is in the eating and if taking out the battery and putting it in again makes a difference, it think it's worth changing that before spending bigger money on PSUs etc (especially if all your 3.3, 5 and 12 volt rail voltages are all within spec and stay relatively smooth/fluctuation free). The motherboard manual will tell you the correct way to do it (note the AC power should be unplugged and drained from the system by attempting to start the PC while it's unplugged for this).
It is a sad fact that PSUs are the most common components to fail on PCs. I've worked as a computer technician and particularly with older PCs, we'd sometimes get a spate of failures over hot days so Curious's suggestion would be the next thing I'd consider.
Z. H. wrote - But, again it hanged and didn't started untill i removed the power cord.
If at all possible it would be best to press the restart button, or use "soft off" by pressing the power button for 4 seconds or whenever it shuts down. If you start replacing parts it is sometimes best to take the approach of building a new system. The regular improvements in onboard graphics make that appealing as an alternative to adding a card or other upgrades that are built in on newer boards. With an E8400 that probably is not your intent.
I had to change my motherboard. Vendor said there is a motherboard / CMOS virus which caused such trouble. However, Intel does not have a built-in antivirus inside the board and Intel does not have a office / servicing centre in Bangladesh. Hence, my motherboard could not be fixed.