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Infinite reboot on Dell Latitude e6540's (McAfee Drive Encryption v 7.1.3.604)

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We deploy McAfee Encryption on all our laptop machines.  This almost always goes seamlessly. 

Recently, we have a new machine which began an infinite reboot behavior after encryption.  From a cold boot, the machine will briefly show (flash) the McAfee logon and then reboot ~ over and over again until it is powered down.  The odd thing is this behavior it not absolute.  Approximately once every 10 to 20 times the machine will successfully boot up to and allow logon at the McAfee logon screen and then log in to Windows 7.  This infinite reboot issue occurs always from a cold boot so we have to turn the machine off and on until it successfully boots (or use the McAfee encryption tools to reach Windows 7).

We have decrypted and then re-encrypted and even reimaged the machine with no luck.  This issue is machine specific. We took the encrypted hard drive out of this machine, placed it in another and there was no issue.  We took the encrypted hard drive which had no issues out of another machine placed it in the machine with the infinite reboot issue and the issue occurred.

The machine is a Dell Latitude e6540.  Some of our in-house tech support folks say this is a motherboard incompatibility issue with some Dell machines and McAfee encryption.  They say it can be fixed with a motherboard replacement from Dell.  Since the motherboard is working fine otherwise, we thought it might be wise to see if anyone else has encountered this issue and whether there is a fix to try before replacing a brand new motherboard (at our own expense since I doubt Dell would buy in to this remedy).

Thanks!

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Re: Infinite reboot on Dell Latitude e6540's (McAfee Drive Encryption v 7.1.3.604)

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I already had the most current BIOS version and had tried changing numerous bios settings over the past several weeks in an attempt to resolve the matter.  Had also tried all recommendations provided by McAfee Tier 3 support.

Here is what fixed this issue.  I contacted Dell tech support and provided the same explanation I included here.  Their tech said this was an issue that was covered under our warranty so they dispatched someone to replace the motherboard.  There were no other indications there was any problem with the motherboard.  But that resolved the issue!  I've tested it with about 20 "cold" boots now and no more infinite reboot issue. 

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McAfee Employee jhall2
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Re: Infinite reboot on Dell Latitude e6540's (McAfee Drive Encryption v 7.1.3.604)

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This issue was seen on a subset of e6540 systems. Dell released a BIOS update to resolve this behavior on the e6540 in Sept / Oct of 2015. I don't have the exact revision number or the date of the release. Can you check the BIOS and update if needed?

Also, ensure the system has the SATA Operational Mode set to AHCI.

Re: Infinite reboot on Dell Latitude e6540's (McAfee Drive Encryption v 7.1.3.604)

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Thanks!  I'll do the bios upgrade.  I appreciate your help!!

Re: Infinite reboot on Dell Latitude e6540's (McAfee Drive Encryption v 7.1.3.604)

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I already had the most current BIOS version and had tried changing numerous bios settings over the past several weeks in an attempt to resolve the matter.  Had also tried all recommendations provided by McAfee Tier 3 support.

Here is what fixed this issue.  I contacted Dell tech support and provided the same explanation I included here.  Their tech said this was an issue that was covered under our warranty so they dispatched someone to replace the motherboard.  There were no other indications there was any problem with the motherboard.  But that resolved the issue!  I've tested it with about 20 "cold" boots now and no more infinite reboot issue. 

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