( CNN ) -- Many Zune owners successfully revived their failed music players Thursday morning , while others were still unable to overcome a leap year-related glitch that caused thousands of the devices to simultaneously stop working on New Year 's Eve . Microsoft issued the first Zune portable music player in 2006 to compete with the iPod . `` Mine is back up and working as of a minute ago ! Thanks Zune Team , '' a user named `` blcknwhte '' posted at 9:19 a.m . ET on the Zune Web site 's forum . `` I 'm glad things are back to normal but this was a major inconvenience , '' posted someone named JaximFlash . `` I have 2 Zune 30s and I had made a playlist of songs to play during a New Year 's Eve party . '' Microsoft Corp. , maker of the Zune , said a bug in the internal clock driver , related to the way the device handles a leap year , caused the malfunction in older Zune 30GB models . Matt Akers of the Zune Product Team wrote Wednesday on Zune.net that the problem should resolve itself after 7 a.m . ET Thursday . The Zune support page says users should allow the internal battery to fully drain , then recharge by connecting the Zune to a computer or AC power after noon GMT ( 7 a.m . ET ) on New Year 's Day . `` Once the battery has sufficient power , the player should start normally . No other action is required -- you can go back to using your Zune ! '' the site says . But some Zune owners still reported problems rebooting their MP3 players Thursday . `` It 's 9:15 a.m. [ ET ] and my Zune is looking just like it did yesterday , '' posted one user . `` Went through the proper steps and still no go . Anybody have any ideas ? '' `` Mine does n't work either , and yes , I can read and follow instructions . I did so three times , '' posted another Zune owner at 10:17 a.m . ET . `` I then called tech support , they told me to charge it for 3 hours , and if that did n't work to call them back . '' The mysterious problem surfaced late Tuesday and early Wednesday as Internet message boards were flooded with complaints about Zunes freezing , prompting Y2K-like speculation about end-of-year hardware or software problems . `` It seems that every Zune on the planet has just frozen up and will not work , '' posted a Mountain Home , Idaho , user on CNN 's iReport.com . `` I have 3 and they all in the same night stopped working . '' Another iReporter said he was working the night shift at a Toys R Us store in Puerto Rico when his Zune player and the Zunes of four co-workers all failed about 1:30 a.m . ET Wednesday . iReport.com : They all froze up . `` It froze and there was no way to turn it off so you just have to wait until the batteries went dead . You ca n't push any buttons or anything , '' Carlos Colon told CNN . Some Zune users dubbed the crisis `` Y2K9 '' or `` Z2K9 , '' a reference to New Year 's Eve and concerns over potential widespread computer failures on January 1 , 2000 -- fears that proved unfounded . Microsoft says it will keep users posted via the tech-support page on http : //www.zune.net/en-us/support/zune30.htm . Microsoft released its first Zune 30GB music player , a competitor to Apple 's popular iPod , in 2006 . No widespread glitches have been reported this week in its second-generation 80GB or 120GB models .
NEW : Some owners were able to restart their Zune music players Thursday morning . Microsoft on Wednesday said problem should resolve itself after 7 a.m . ET Thursday . Users should allow internal battery to fully drain , then recharge , Web site says . Thousands of older 30GB Zune players froze simultaneously late Tuesday .