I have two Vostro 260's, around 2 years old. If I do a normal shutdown, they will not power up again unless I disconnect and reconnect the power supply connections to the motherboard (I discovered this after trying everything else). These PC's are Win7, 4GB RAM, 200GB hard drive, hibernate mode is turned off. Unplugging the power cord has no effect, even if I wait a full day. Only disconnecting/reconnecting the motherboard power cables gets these PC's to start up again, and works every time. What would cause this?
↧