My computer has really been killin me. I honestly have no clue what to do with it anymore.

Ok let me first off say this computer was my dad's friend's....who i was supposed to fix it for....and he ended up gettin a new one, n I had this in my room for a while so my bro decided tohook it up.

Well anyways, I had never checked it out to see what the problems with it were....and so when i had first loaded it, everything works fine and all that

then the computer freezes....and i've dealt with that a billion times like we all have, so i restart it....but when it restarts, there are lines across the screen from teh beginning...from the gateway screen till windows, and once windows loads up, its frozen black wit the mouse on the screen

so i restart again, same problem occurs...sometimes the gateway opening is clear but when windows loads up, it has vertical lines and it freezes at the log in screen

so i load up in to safe mode....and it still has vertical lines, but it doesnt freeze up at windows and everything works fine except for the vertical lines...so i try runnin scan disk...and that makes everything clear up n i restart

computer works fine for a few days....problem occurs again...try the scandisk method, that does not work this time....so i try something else.....i go through and shut down alot of the devices so i can go back and turn them back on one by one, and see which one causes the problem......well i turn em all off, restart the computer and it works good again...and i load up all the devices fine....but then the computer starts trippin out again later....eitehr freezin up on me or something later on and when i restart, the whole thing jams up again

so the only thing i can load up in is safe mode....well i run Regclean now....and that causes the screen to clear up, and the computer works fine agian....but its like every time i exhaust a different method, i can never use it again n the computer resorts back to this stage

well i reformatted the computer....still nuthin ......and somtimes the computer works fine, alot of times it doesnt....and there's only 2 ways i can load it up when its doing this problem....either in safe mode, or if i run from safemode, choose a diagnostic start up n start up without autoexec.bat and config.sys....and when i load it without config.sys and autoexec.bat its almost like safe mode with sound and internet...so i can use the computer, but its in its primitive stage lol in 640 x 480 and all that....and i just use it in that mode (like right now) till the vertical lines disappear and then i can restart back into the normal set up

i run scandisk, no problems with the drive....defragging doesnt help....nothing works really

so is this a computer problem or a monitor problem?


this is the type of computer i'm using:

Gateway running Windows 98 SE
Gateway EV700 Monitor and 3dfx voodoo3 graphics adapter
384 MB Ram
Intel Pentium III , 500 MHZ

ANY HELP WOULD BE HIGHLY APPRECIATED

Peace
Skillz