PC comes on, on its own

Kurgen · 7 May 2015 at 13:33

My brother recently upgraded his PC. just the mobo, cpu and ram..the case hdd psu re-used. He keeps having an issue where the PC will randomly switch itself on , can be any time of day, sometimes in the night. Ive read a few issues about some power management in bios but all a bit vague.. :confused:

Note: under extreme protest from me, he didn't re install windows after the rebuild, just let the system sort itself out after a few reboots an driver installs :rolleyes:

Kouba · 7 May 2015 at 13:35

Has he tried resetting the CMOS?

ED209 · 7 May 2015 at 13:41

check in the bios to make sure wake on LAN is not enabled.

d_brennen · 7 May 2015 at 13:42

Kurgen said:
Note: under extreme protest from me, he didn't re install windows after the rebuild, just let the system sort itself out after a few reboots an driver installs

Not a fan of this but generally it's doable these days and won't be the cause of the issue.

I'd have a look in the BIOS setup for any options like wake on LAN, wake on keystroke or mouse. It is possible something plugged into the PC is doing some weird ****.

Otherwise, I am not going to say it was ghosts, but you should probably move house and have the PC exorcised

Kurgen · 7 May 2015 at 13:48

I have made the above suggestions, he thinks he has tried all apart from moving house.. . its a bit hard work as he's very basic at PCs im surprised it booted when he upgraded

Woden · 7 May 2015 at 13:58

Demnons?
Front panel header wired right?

Kurgen · 7 May 2015 at 13:59

hes just told me he has a USB wifi dongle plugged in, suggested removing that first.. its probably a real cheapo one

dacads · 7 May 2015 at 14:05

thread delivers.

good luck with removing the demnons.

Ryan-3 · 7 May 2015 at 14:11

See what it's like without that WiFi dongle, then go for complete default settings in BIOS and re-install windows. If that hasn't fixed it, it leaves only demnon's as a possible cause. I'd start running. FAST.

ChocolateStarfishRammer · 7 May 2015 at 14:25

Try unplugging all the demnon's from the usb ports.

Jinxter · 8 May 2015 at 15:21

Check the power switch pins are connected correctly from the case wiring to the motherboard. If that's OK then maybe an issue with the case power switch and / or wiring to the motherboard?