Laptop starts then every 5 min goes in sleep

[terry5880]

Hi all got cq61 and had thread up about screen blank well got it fixed in shop it was connecter on motherboard and lcd cable . well wen i start it it comes on then after 5 min it goes like into sleep screen goes off but i can faintly see in background i cant press anything to get it back on but i close the lid reopen it and most of time it sound like it gone off but the on off light flashes on/off constant then i press touch pad and on it comes . as normal then 5 min and same thing , but then just now it went off completely .. now i checked all sleep and hibernation setting turned them all to never.. also i know battery is faulty as even when fully charged laptop goes off .. what could be problem please help

 

[terry5880]

hi all took it back to shop and they saying its definate the battery they say £60 for new battery i know could prob get it cheaper can anyone reccomend where as i know off ebay would prob be sodgy remake or something ? also does the MaH matter like the origanal battery is 10.8v and 4200mah i see battery on ebay 10.8v and 4400 mah and 5200 mah does this matter thanks in advance