Crash in calculator

[DrD]

(03-27-2017 05:24 AM)math7 Wrote:  <
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for example the variable X had a value of 2,785 .... and I write DelHVars (X) and I give enter and it puts 0 But if I type X on the command line and hit enter it comes out again with its value of 2,785

That is normal operation. Variable X is not a Home USER variable. X is a Home RESERVED variable for real numbers. See virtual calculator's [Help] [Tree] Variables.
The DelHVars command, for deleting Home USER Variables, is described in the User Guide, found in the virtual calculator's Help menu item. I think it is on page 635, depending on which version of the user guide you have.

Your memory hardware is probably just fine, but you can run a memory test, found on from the diagnostic page: C-F-O [ON] (HOLD EACH LETTER KEY DOWN and then press [ON]).

From that diagnostic suite, it might be a good idea to select item 4 (FLS Utility), then item 3 (Format Disk C), then item 9 (Reset). Then re-install the 10637 firmware release. This should give you a clean installation of the firmware.