Presario CQ56, AMD V140, low core frequency

Hi,
I have Compaq Presario notebook CQ56 with AMD V140 CPU.
It started to work extremely slow recently.
I checked with CPU-Z the system settings, and it shows the following:
core speed ~800MHz
bus speed  ~200MHz
multiplier: 4
Dram frequency 536MHz
NB Frequency ~1600 MHz
Is it possible that somehow the frequency went down?
I updated the BIOS - did not help
Thanks

Those temperatures are a bit high, but still well within normal range. We see a lot of people reporting temperatures in the 90C ranges. The beep is a mystery to me.  

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