govdo

i relly hate acer!!!!!!!
okay heres the problem, when im on ac power my mouse wont work properly (its all jerky, like it works normaly for 4-5 sec and then it jest freezes for like a half second and the whole time its like that, after some time it stops working completely) and i need to use the touchpad which i realy hate.
the moment i turn on battery power - everything works perfectly well.

and sometimes if i have the mouse attached on the laptop when i turn on the my laptop it wont eaven get to the "acer screen" (the one that comes before windows loads....the one which says press f2 for bios...)
i cant understand why!?!?! why why o acer why????

im using win xp eaven though 5520g was made to be running on vista, but i was running it on xp before the problem also and everything worked just fine for 5-6 months..... i tried formating the windows partition and installed it again (sp3) but the problem persisted, i installed my mouse's original drivers but it still persisted....i tried to turn off the touchpad and after i did it the problem wanst gone...

i dont know what i should do anymore, im running out of ideas!!!! the only thing i didnt try is maybe update the bios....which im gonna try but am a little scared of.

pleeease help me if you know how....if you dont give me suggestions anyway please,
im so desperate

thank you