Nervich

Hi guys i just made a big mistake i did an update to my bios laptop SVS1513C4E (old bios R1020C5) to R0142c5... and now my laptop turn on and off after few seconds and if i keep pushing the VAIO button it runs but the fans are noisy and cpu gets 51° and turns off when i release the VAIO button.... i dont know what to do i search for the old version of bios R1020C5 and didn't find anything so please help me guys