PC won't boot in morning during winter when its cold
#1
Question 

Hey everyone so I have this peculiar issue with my pc, its a desktop. Every winter when its cold in morning my pc will not boot, once it starts there is no issue everything works fine, all programs run well there is no lag or anything like that.

This same issue has happened with some of my friends too but I cannot figure out what is causing this issue.

When I press the start button cabinet and cpu fan will start but there is no POST, monitor is completely blank. After trying to restart multiple times pc will boot but this cause problem with data corruption and is very frustrating sometimes it just won't boot up the whole day.

If anyone has a solution for this problem please help me.
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#2

It is a very unusual issue sometimes bad ram can cause this. do you hear any beep when you start your pc it could indicate a problem?

I would suggest you to remove graphics card and try starting your computer if it is a power supply issue, removing graphics card could lower power requirement.

If you have multiple ram, try starting pc with only one ram plugged one by one.
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#3

This issue used to happen with my old pc I tried everything cleaning everything, applying thermal paste, cmos reset but nothing worked and I suspected it was the motherboard and replace which worked. I think it is due to the moisture which caused short circuit in motherboard components.

Now I clean my pc from dust more frequently in winter to avoid this problem it is really frustrating when you want to do important and pc won't boot.
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#4

@ben777 thank you for your suggestion I would try removing the graphics card and ram to see if it solves the issue.

@dave I have tried doing cmos reset and also updated BIOS firmware even reinstalled windows which worked for 2-3 days pc would start properly but after that again same problem will be back. I would clean my pc and apply new thermal paste to see if it works.
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