i suspect a hardware failure in the laptop, probably the motherboard.... shall go to the repair centre in wuxi. but they told me my model is not under global warrantee, so prabably i shall bring it back to singapore to repair... luckily i've made other softcopies for my srp and pw, or else i'll have problems in the ssef next year... hm, still very yu4 men4 and bu4 shuang3