how to reboot , dell optiplex 210L , full reboot?

i ve dell d600,when i on it,it wil get to dell logo and freze but if i presed it thightly,it wil boot up.what should i do to solve dis hanging stuf thanks to al?

pluged in but not charging?

network problem?

i forgot my loggin imformation my dell d520 can you help me?

my browser is to big for sreen how do i fix this dell dimention 2400 ?

no dvd rom /device start up = press f1?

pluged in but not charging?

DELL optiplex gx270 (xp)reinstall?

windows xp re-install (2)?

dell xps?

how can i fix my dell laptop power?

Where can I get missing driver for Dell Dimension 9200 TV card?