Mobile fone wen i switch my fone on it wont load up ,the screen just keeps flashing on and off

go to setting and developer option and disable alll scren option there you will see update screen and gpu rendering and screen flash etc
or reset your setting to factory reset but before doing so backup your data with external memory card

the phone may need to flash any cell phone place can flash it!!

Dear, i think its software problem, u should go to a certified mobile fone repairer and get flash ur fone...

Please connect the phone to a power outlet. Let it charge for 15 minutes and then switch it on. This happens when it is out of power.

may be ur LCD screen have some problem

are u sure that ur not able to see the fone's stand by screen now?its totally black?are u sure that there's no problem with the screen itself,the care guys might have left the screen connection loose. other wise try one thing,Format ur fone. by pressing *#7370# u have press keys once wait for 5 seconds and press the left selectin key [where u get the YES option normally. the fone would restart and lets see are u able to go back on the screen. IF YES then u can set the Sleep mode to off cuz the sleep mode gets inititated after 20 minutes when u keep ur fone idle means u dont operate ur fone for atleast 20 minutes. BUT IN THIS CASE ULL LOSE ALL UR DATA INCLUDING CONTACTS AND MESSAGES ETC.IF U HAVENT TAKEN THE BACK UP EARLIER.so its totally upto u that u want to proceed with this step or u can again show ur fone to the nokia care guys. but they'll charge u cuz obviously after 2 years ur fone is out of warranty

i had the same problem before. theres nothing wrong with it, it just needs a new lcd screen. u can either fix it yourself or take it to a mobile repair shop.

definition of achalasia?

Have you done any online software updates on the phone?