I've reinstalled Ubuntu and now it starts. I typed dmesg and there's this message anyway:
[ 0.875431] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4 [ 0.875438] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID) [ 0.875440] pcieport 0000:00:1c.4: device [8086:a114] error status/mask=00000100/00002000 [ 0.875442] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover [ 0.879660] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4 [ 0.879667] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID) [ 0.879669] pcieport 0000:00:1c.4: device [8086:a114] error status/mask=00000100/00002000 [ 0.879670] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover [ 0.911313] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4 [ 0.911319] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID) [ 0.911320] pcieport 0000:00:1c.4: device [8086:a114] error status/mask=00000100/00002000 [ 0.911321] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover [ 0.923536] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4 [ 0.923542] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID) [ 0.923543] pcieport 0000:00:1c.4: device [8086:a114] error status/mask=00000100/00002000 [ 0.923544] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover
I've reinstalled Ubuntu and now it starts. I typed dmesg and there's this message anyway:
[ 0.875431] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4 mask=00000100/ 00002000 mask=00000100/ 00002000 mask=00000100/ 00002000 mask=00000100/ 00002000
[ 0.875438] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID)
[ 0.875440] pcieport 0000:00:1c.4: device [8086:a114] error status/
[ 0.875442] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover
[ 0.879660] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4
[ 0.879667] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID)
[ 0.879669] pcieport 0000:00:1c.4: device [8086:a114] error status/
[ 0.879670] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover
[ 0.911313] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4
[ 0.911319] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID)
[ 0.911320] pcieport 0000:00:1c.4: device [8086:a114] error status/
[ 0.911321] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover
[ 0.923536] pcieport 0000:00:1c.4: AER: Corrected error received: id=00e4
[ 0.923542] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, id=00e4(Transmitter ID)
[ 0.923543] pcieport 0000:00:1c.4: device [8086:a114] error status/
[ 0.923544] pcieport 0000:00:1c.4: [ 8] RELAY_NUM Rollover