computer power supply problems
2010
Power supply problems on a HP?
I recently upgraded a family members HP media center, with more memory, small graphics card and windows 7, with no problem, and everything within the 300 watt power Supplies capability. The computer ran great.
She normally has her computer on 24/7 but went away on holiday for a week, and turned the computer off using the normal shut down procedure. She did not unplug it.
She returned, turned on the computer, and nothing. I checked the switch and the action seems fine. I checked the leads, all plugged in, no problems there. Only thing I did notice, is the green led on the power supply seemed dimmed. So I am assuming the problem is with the power supply.
Is there anything else I should be checking?
Thanks in advance.
One thing to try… unplug the A.C. cord from the PSU. Let it sit for awhile… something may have occurred while it was shutdown that caused the PSU to crowbar.
If it still will not power up, then replace the PSU.
My standard recommendation is to replace the stock PSU with one 150watts higher than the factory PSU.
The factory unit is typically rated to run the computer as is, and not 24/7. The 300watt supply gives it a little overhead where it is not running at 100% all the time.
By installing a PSU rated at 450-500watts allows the PSU to operate at a 60-70% power level and not stressing the electronics in the PSU.
Especially if the computer is on 24/7.
Good to keep in mind that typically a motherboard is going to be around 100-130watts, added GPU anywhere from 50watts to 500watts depending on the card, fans 15-30watts, disk drive (?), CD (?).
They add up and vary from system to system but most stock power supplies are spec’d out close to the running limits of the system.
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