System not running right

[silver.bullet at zoho.com]

Rephrased:

>If possible I would reconnect the data and power cables

of hard disk drives ;).

>If several RAMs are used I would change the slots when reconnecting the
>RAM.

The above only should be done by somebody who knows what she/he is
doing.

The below can be done by everybody ;).

> Disconnecting all unneeded devices is useful too. Even replacing
>a mouse or connecting an USB mouse to another port is something the OP
>could test. This only should be done by somebody who knows what she/he
>is doing.