GO Professional 520 stuck on TomTom logo

Hi
@Rickuk2020
Welcome to the site....

It looks like Recovery Mode has initialized on your device....

When the device is in Recovery Mode... The device MUST be connected to your PC using the supplied USB Cable with MyDrive Connect running in the background for the Recovery process to complete....

MyDrive Connect must be running on your PC, and be capable displaying as CONNECTED on MyDrive Connect...

Installing MyDrive Connect....
Here... https://help.tomtom.com/hc/en-gb/articles/360013959499-Installing-MyDrive-Connect

See Tomtom FAQ... Navigation device not starting or displaying a cross....
I think the device is somewhere between bullet-point (7) & (8)
See... https://help.tomtom.com/hc/en-gb/articles/360013959579-Navigation-device-not-starting-or-displaying-a-cross

Once Recovery Mode is initiated, and if a connection to MyDrive Connect has NOT established....
Recovery Mode will continue to attempt to connect to MDC until the Server eventually times-out
Any attempts at a Restart... The device, will continue to display a Splash screen with image of a PC and a Red Cross or a Screen displaying a spinning disc, until Recovery mode can establish a connection to MyDrive Connect or the Server eventually times-out....
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Due to COVID-19 the phone service has been suspended
For Tomtom Support Email or Chat lines...
(Monday to Friday Normal Office Hours)

The way of contacting Customer Services has changed
(1)... A couple of Tips when Contacting Tomtom Support....
Here... https://discussions.tomtom.com/en/discussion/comment/1714844/#Comment_1714844
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(2)... Tomtom FAQ … How to Contact Tomtom Support....
Here… https://help.tomtom.com/hc/en-gb/articles/360015568919-How-to-contact-TomTom-support

Stay Safe... ATB YFM
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(2)... The official way to Contact Tomtom Support....
Here… https://help.tomtom.com/hc/en-gb/articles/360015568919-How-to-contact-TomTom-support

Stay Safe... ATB YFM