HP t820 Flexible Thin Client beeps 4x in red

[Ed_Gar]

hello there...

               Somebody help me, i got in trouble with HP t820 Flexible Thin Client after an electrical fluctuation, (i don't have UPS) i can't open my PC and it's beeping in red for 4x.

                Please i don't know how to fix it.

                Thank you.

[GBL84]

Hello Ed_Gar,

The power supply might have failed.

Go through the guide : http://h10032.www1.hp.com/ctg/Manual/c04007272 -PAGE 74

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Thank You,

GBL84

I am not an HP Employee 

[Ed_Gar]

thank you sir... but i don't know where's the power supply of HP t820 Flexible Thin Client... i already opened it up but i didn't see anything that looks like a power supply. but i does have an adapter.. ( T . T )