Continuous 8 beeps error (error code 2000 0321 unable to access edid eeprom)

i have dell inspiron n5010 15r laptop.

i am facing this 8 beeps (black screen/no display) problem these days.

pressing D key with Power button did work for me. it runs those color tests and starts normally. runs smooth for a while as there was no problem at all... it can be few hours or 2 days it runs soomthly...

but it crashes again the same way with that blue screen of death...

i was just able to read 'shutting down to prevent damage..' and there was too much..

i ran diagnostics also. by pressing F12 key..

it gave me "error code 2000 0321 unable to access edid eeprom"

what should i do?

if there is some fault with any of these i.e. LCD Cable/ LCD Screen itself/ graphics card or something else, then how come it starts with that D+power button and runs smoothly for a while. no glitches, no color or resolution change.. not a single bad pixel.. nothing... but then suddenly crashes for no reason and starts giving 8 beeps again...

right now i am reporting this issue from my laptop only.

dont know if it would crash again just before/after posting this issue.

please give me exact solution so that i can try it on my own at home only. as i am out of warranty already.

and yes... my laptop's battery is dead. it just gives me 1-2 minutes backup to hibernate.
and i also have 4kb bad sectors on the hard disk (320GB capacity).

would these two can cause 8 beeps problem ?