Is unplugging the power from a PC in standby or in normal mode bad for it?
Unplugging a computer at random times is never a good idea. Standby on a computer is a mode where the state of the Operating System, Windows for most cases, is placed in the RAM on the computer. RAM only holds memory as long as it has powered applied to it. Unplugging the computer, while in standby mode, will have the same result as if you unplugged it while running normally.
Problems that can occur from unplugging a computer, in standby or running normal, can include but are not limited to...
Always shutdown or hibernate your machine when you can, only do a Reset (or unplug the computer from the wall) when your machine is locked up.
Trust me, waiting the 5 to 10 extra minutes for a computer to shutdown gracefully is worth it when pulling the plug can create many hours of headaches and problems.
Unplugging the power at random from a computer is always a bad idea. It could cause hardware problems.
Short answer: Yes
It's better to hit the restart/reboot button, or to shut it down by holding the power button down for (usually) 5 - 10 seconds.
Actually unplugging it causes a small electrical short which can cause a power spike. If your power supply is good, no real problems - it'll blow before your computer does. If it's not so good, well, your computer might short out, and die.
protected by ChrisF Oct 20 '11 at 13:13
Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.
Would you like to answer one of these unanswered questions instead?